【摘要】 [目的/意义]知识卡片是网络搜索引擎提供实体检索服务和实现检索结果可视化的重要功能,对其进行评价有利于改善搜索引擎的服务能力。[研究设计/方法]采用分层随机抽样的方法从WikiPedia中选取1200个实体,以Google和Bing为例,开展搜索引擎知识卡片功能的评价实验。[结论/发现]搜索引擎整体知识卡片返回率低于35%,Bing的知识卡片返回率高于Google;用户满意度较高,Google在相关性的指标上优于Bing,Bing在丰富性的指标上胜于Google;在内容和结构方面,Bing知识卡片的属性更丰富;仅有Bing提供了知识来源链接,但知识来源相对单一。[创新/价值]为搜索引擎知识卡片功能的评价提出了相应的评价方法和评价指标。更多还原

【Abstract】 [Purpose/Significance]As a novel feature of the web search engine to provide entity retrieval service and visualize the search results, the evaluation of knowledge card of search engines is beneficial for the improvement of services provided by search engines. [Design/Methodology]With the use of the stratified random sampling method, 1200 entities were extracted from Wikipedia. By taking Google and Bing as examples, the evaluation test was conducted on the knowledge cards of search engines. [Findings/Conclusion]The total response rate of knowledge cards is less than 35%, and the rate of Bing is higher than that of Google. Generally speaking, users’ satisfaction is relatively high. Specifically, Google outperforms Bing in the indicators of relevance, while Bing has a better performance in the metric of comprehensiveness. In terms of content and structure of knowledge cards, the properties of Bing’s knowledge cards seem to be more abundant. Besides, only Bing provides links of knowledge resource, but the source seems relatively simple.[Originality/Value]This paper has proposed an evaluation method and corresponding metrics for the knowledge cards of Web search engines.更多还原